Apparatus for selecting and separating warp threads



J. E. MOORE APPARATUS FOR SELECTING AND SEPARATING WARP THREADS 2 Sheets-Sheet 1 Filed Feb. 26. 1925 I FIGJ.

Dec, 13, 1927. 1,652,316

J. E. .MooR;

APPARATUS FOR SELECTING AND SEPARATING WARP THREADS Filed Feb. 26. 1925 2 Sheets-Sheet 2 INVENTOR fratentea Dec. 13, 1927, it

JQEN N ST M ORR F BLACKBURN, ENGLAND;

' ArrARA'rUs Ion SELECTING AND SEBARATING WARP (TH-BEADS.

. Application filediliebmary.26, 19.2 .,iSerial No.

- This invention relates to apparatus a for selecting. andseparating warp threads injthe preparati nio'fthe'warplf r l om fe we rr. ing, and,to;that type of apparatusin which.

-; acarriageahaving .a selector with a; hook de viceat one side is @caused to, travelypa'st the warp threads while the latter 1 are suspended in: a state of E tension between top and bet tom clamping members, the selectonas it .ap-

preaches eachwarp lthread. 'engaging same with? .a. forward movement and transferring ltUWith-fi, diagonal movement on to a sep- I aratbl'balong which the selected threads are spaced in a position "for enabling them 'to be drawn through the: healds and reed by the operator. 1;

In machines of; this class it is. possible for the selector tomiss transferring a thr'eadon to the separatorrandfor suchthread to slip ofi the selector and take up a position-behind the first .few unselected. warp threads with. the-result. that if I the fault is undetected quite a vnumber 1 of-threads. may be selected, transferred on to the separator; takenofi the latter and drawn through the healdsj and reed before the missed thread is caught bythe selector: and transferred to the separator.

This causes the missed thread to occupy] a crossed position'in the warp and it is liable to produce .f-aulty weaving. .Thepresent in.-

ventionuhadfor its. chief object to overcome this :objection; to render ,the action of the.

selector morej certain and to. introduce a simple and efiicient form; of mechanism by meansof awhich the -,-tensioni on. the, warp threads can; bepea'sily 'and'accurately adjusted.

. According to thisinventionmeans vided Qwhereby any thread that 1 the: selector;

fails to transfer, tothe separator isprevented from getting behind. any of .the remaining threads so that it will again be operated upon by the; selector during; the next operative movement ofthe. latter. Themovementr -of;-ttheselector in relation to; that of the sepr arator is so timed that theselector-transfers a threadion tothe separator whilst the latter is making its forward orr spacing movement,

and commences: its return stroke before suchforward movement is completed, The bottom clamping members 1 previously,r-eferred m are-:inounted in 'such'manner that. they can be moved towards and away from a framein such manner :as to deflectthe warp threads over the iedg'e of such frame and so increase- .clamping members can be raised, or lowered h ft p. :bott

11,828, a d in GreatBritain war-na 27, 1924.

theirtensiouor move them entirely clear.

from the frame. A separate adjustment is.

also provided whereby each endofthe lower.

for. effecting an independent adjustment A In order thatrthe. ,said invention maybe clearlyunderstoodand readily carried into I f c t e m i de cr -me e f lly. with.

reference to the accompanying'drawings, in h fi a Y I '4 .;.l J-. .l-isa; r ntael m i h; and ga end elevation of a machine o f the kind specified with theimprovements applied thereto; Fig. 3 is'an end'view of a portion ofthe warp tensioning apparatus drawn to a larger scale.

ther'em'ainingthreads. r .A 'nd'cates thecarriage, Bthe selector, 0' t sepa es. D,

c ampi g ember p l eexample Sho n he meansjfor P venting a missed thread from getting behind rp h ad any of the remaining threads comprises a.

deflecting. plate .1? (Fig. .6) that-is mounted 'oni'the carriage-A-iu such a positionthat it will defiect, or push back the .jforemost unselected warp threads, D v as a the carriage travels; past them, Forthis purpose-the forwardend of the plateis preterablyrounded or inclined. at E at so that it will, gradually deflect the .threadsflasit comes in contact with them and the-rear end d? of the plate occupies a; position slightly. in advance of the firstqunselected thread. D so ,that if such thread slips off the .selector B as t-he latter is transferring. it to the separator .C it-will} spring backagainstthe rear, end of the plate. and either remain therein the path. of the 'selector, or. return to its originalposition.

Iniapplying the invention toa machine such I asathat -Whl0h )is describedinthe prior; United States patent specification N0.--1,-2.59,-f 546 the deflecting-plate may be formed. .onor;

adaptedZto; be screwedor. otherwise. fixedto,- the-carriage A. This; arm. iscurved or otherwise shaped to 'clear 'the separator.C4 The .adjustably.,-attachedjto *aniarm d that is:

latter is actuated by a cam which is adjust ably mounted on a shaft G through which motion is transmitted to the selector and carriage, adjustment of the position of such cam enabling the selector and separator to move in an desired order in relation to one another. he bottom clamping members E previously referred to comprise two bars hinged together at e and provided at each lever is moved in one direction it moves the bottom clam mg member E towards a frame a whic in the example shown is the 7 one on which the carriage A runs, thereby deflectin the warp threads against the edge of such rame and tightening them; the lever e being retained in the position to which it has been moved by its catch 6 engaging one or other of the teeth in the toothed quadrant e To move the lever e in the opposite direction the catch 6 is first lifted out of engagement with the quadrant teeth, and the lever then moved to slacken the warp threads D, and if desired to move them out of contact with the edge of the frame (1.. It. it is desired to eficct an independent adjustment of the lower clamping member it can be raised or lowered at one or both ends by turningone or both of the adjusting screws 6 carried b the pivotally mounted arms e.

What I c aim as my invention and desire to secure by Letters Patent in the United States, is:-

1. In apparatus for selecting and se arating warp threads in which a power riven carriage containing war selecting and separating mechanism is a apted to be driven past warp threads which are maintained in a state of tension between two pairs of clamping members, the combination with a thread selector and a thread separator of means stationary on the carriage for preventing any thread that the selector fails to transfer to the separator from springing past in front of any of the remaining threads so that it will again be operated upon by the selector during the next operative movement of the latter.

2. In apparatus for selecting and separat ing warp-threads in which a power driven carriage containing warp selecting and separating mechanism is a apted to be driven past warp threads which are maintained in a state of tension between two pairs of clamping members, the combination with a thread selector and a thread separator of a thread deflecting plate stationary-mounted of the carriage containing warp selecting and separating mechanism is adapted to be driven past warp threads which are maintained 1n a state of tension between two pairs of clamping members, the combination with a thread selector and a thread separator of amine):- tending across the warpthreads and means i for moving one pair ofclamping members to a variable extent towards and away from the rail to deflect the warp threads over the edge thereof and regulate their tension, or

move them entirely clear of the rail, and means for securing the clamping members in an adjusted posit-ion.

4. n apparatus for selectingand separating warp threads in which a power riven carriage containing war selecting and separating mechanism is a apted to be driven past warp threads which are maintained in a state of tension between two pairs of clamping members, the combination with a thread selector and a thread separator of a rail extending across the warp threads, means for movin one pair of clamping members to a variab e extent towards and away from the rail to deflect the warp threads over the edge thereof and regulate their 'tension, orlmove them entirely clear of the rail, means for securing the clamping members in any adjusted position, and screw actuated adjusting mechanism for moving either end of the said pair of clamping members independently.

5. In apparatus for selecting and separat mg war threads com rising means for maintaining warp thiea s stretched in approximate parallelism, and a carriage wer driven across the series of warp threa s, the combination with a thread selector mounted on said carriage, and means for operating a the same to take off said warp threads successively, of a deflector mounted on the can-i riage to travel therewith in advance ofthe selector having a prolection protruding across the plane in whic the warp threads are held and terminating in arr: arrestin surface adjacent to but in advance of sai selector. a 6. In apparatus for selecting and separating warp threads comprising means for maintaining warp threads stretched in approximate parallelism, and a carriage ower drivenacross the series of warp threa s, the combination with a thread selector mounted on the carriage in position to take ofi such warp threads successively,rof adeflector late carried by the carriage in advance 0 the selector, arranged to deflect the warp threads transversely to theplane in which they nor-" mally lie, and havin a recedin formation adapted to come ad acent to t e first an combination with a thread selector mounted selected thread when the apparatus is in normal operation.

7 In apparatus for selecting and separating warp threads comprising means for maintaining warp threads'stretched in approximate parallelism, and a carriage power driven across the series of Warp threads, the

on the carriage in position to take off su'ch warp threads successively, of a deflector plate mounted in a stationary manner on the carriage in advance of the selectoryhaving its forward end inclined 'to deflect the warp threads as it comes in contact with them, and

its rear end adapted to occupy a position 15 In testimony whereof I have signed my name to this specification.

JOHN ERNEST Moons. 

